austincollias

Hey everyone, I recently received a used UM2 and it worked for a while but decided I wanted to clean it, I watched plenty of videos on how to take everything apart and was very careful, but classic too much hardened PLA made some pieces difficult to take off. When I put it back together the head would not heat up. When i wiggled the sensor wire it heated up a little bit and then cooled down again. I could go into the settings and see the temperature hovering around 27-27 degrees c. The only problem was there was no error message for a faulty sensor. Before I buy a new sensor I want to make sure other parts are not broken as well. Have other people experienced this as well? thanks!